Effects of Sm and Cr co-doping on structural, magnetic, optical and photocatalytic properties of BiFeO3 nanoparticles

Kebede, Mekonnen Tefera; Devi, Sheela; Dillu, Venus; Chauhan, Sunil

doi:10.1016/j.mseb.2022.115859

Cited by 17 publications

(5 citation statements)

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“…Similar results are obtained by other researchers. 61,64 The reason could be as follows: A crystalline material always has certain defected states, which causes the band gap region to develop localized energy levels. When electron gets excited from valence band to conduction band, these are trapped by these localized energy states and prevent their direct transition.…”

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confidence: 99%

Effect of Pr and Mn co-substitution on Structural and Optical Properties of Bismuth Ferrite

Rani,

Shekhar,

Dev

et al. 2024

ECS J. Solid State Sci. Technol.

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One of the most recent developments in the area of modern optics arises due to perovskite materials. The ABO3 perovskite materials like bismuth ferrite is an appealing alternative for various optical devices. Hence, in the present study, Praseodymium (Pr) and Manganese (Mn) co-substituted bismuth ferrite ceramics are prepared by the modified sol-gel method and the correlation between structural and optical properties with the variation in co-substitution concentration has been investigated. Rietveld refinement of X-ray diffraction patterns demonstrates a structural phase change in crystal symmetry from rhombohedral to orthorhombic phase with the increase in concentration for x ≥ 0.025. Lattice deformation in the co-substituted samples is confirmed by Fourier transform infrared and Raman spectra. UV-Vis diffuse reflectance spectra confirm the strong absorption of light in the visible region. Furthermore, optical energy band gap decreases from 1.95 to 1.50 eV with increase in concentration from x = 0.000 to x = 0.100. The refractive index attains the maximum value i.e. 6.16 for x = 0.025 whereas it drops to minimum value of 4.06 for x = 0.100. This demonstrates that the structural modification in bismuth ferrite can be used to tune its optical parameters for the device applications.

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confidence: 99%

Effect of Pr and Mn co-substitution on Structural and Optical Properties of Bismuth Ferrite

Rani,

Shekhar,

Dev

et al. 2024

ECS J. Solid State Sci. Technol.

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“…[9,10] Co-doping techniques have emerged as a significant tool for drastically improving the multiferroics properties and photocatalytic activities of BFO powder. [11][12][13] In this study, a simple sol-gel-based auto-combustion method is employed to synthesize nanosized Bi 1Àx Sm x Fe 1Ày Sn y O 3 powder and investigate their structural, optical, magnetic, and photocatalytic properties. Based on the literature survey, the synthesis of Bi 1Àx Sm x Fe 1Ày Sn y O 3 nanoparticles using a sol-gelbased auto-combustion route has not been reported to date.…”

Section: Introductionmentioning

confidence: 99%

“…[ 9,10 ] Co‐doping techniques have emerged as a significant tool for drastically improving the multiferroics properties and photocatalytic activities of BFO powder. [ 11–13 ]…”

Section: Introductionmentioning

confidence: 99%

Improved Optical, Multiferroics, and Photocatalytic Properties of Bi_1−xSm_xFe_1−ySn_yO₃ Nanoparticles Synthesized by Sol–Gel Method

Ghanshyam

2023

Physica Status Solidi (a)

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Nanosized Bi1−xSmxFe1−ySnyO3 powders are successfully synthesized using a simple sol–gel auto‐combustion route. The X‐ray diffraction pattern confirms the formation of a pure‐phase crystalline structure in bismuth ferrite (BFO). The co‐doping of Sm3+ and Sn4+ into the BFO structure indicates structural distortion, and a decrease in average crystallite size. Transmission electron microscopy and field‐emission scanning electron microscopy images show agglomerated particles surface morphology with particle size of around 41 nm for BFO and 22 nm for co‐doped BFO sample. X‐ray photoelectron spectroscopy measurements indicate a reduction in oxygen vacancies due to the co‐doping of Sm–Sn into BFO lattice. The co‐doping effect results in a reduction in the value of optical bandgap and an improvement in multiferroics properties. A significant enhancement in the photocatalytic degradation of rhodamine B dye under visible‐light irradiation is observed for co‐doped samples, and these results are further supported by photoluminescence analysis.

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“…19 The B-site of PFO can be occupied randomly by Fe 3+ and Cr 3+ ions, which may cause distortion of the cation spacing between oxygen octahedra. 14,20,21 Previous studies have reported that the structure of PFO is periodically modulated by crystallographic shear planes. 22 The displacement vector of these planes can be represented by R ⃗ = 1/2[110] p + 1/3[001] p , where the 1/2[110] p term is the shear operation vector and 1/3[001] p is the relaxation part.…”

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“…24 The incorporation of Cr 3+ into the structure may result in spin coupling between Fe 3+ -O-Cr 3+ that could potentially enhance the magnetic and ferroelectric properties of PFO. 21,25,26 Up to this point, there have been no reports on doping PFO with transition group metals. Therefore, the impact of chromium doping on the ferroelectric and magnetic properties of PFO thin films will be examined.…”

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confidence: 99%

Synthesis and Characterization of Cr-Doped Pb₂Fe₂O₅ Thin Films by Reactive Magnetron Sputtering

Beklešovas,

Stankus,

Abakevičienė

et al. 2023

ECS J. Solid State Sci. Technol.

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Multiferroic materials, which exhibit simultaneous ferroelectricity, ferromagnetism, and ferro-elasticity, have attracted significant attention due to their multifunctional properties. Coupling between ferroelectric and magnetic properties has led to the development of non-volatile memory devices, transducers, magnetic field sensors, and other applications. Pb2Fe2O5 (PFO) is a promising multiferroic material due to it simultaneously exhibiting ferroelectricity and ferromagnetism at room temperature. Doping with aliovalent ions, such as Cr3+, has been proposed as an effective method for enhancing the ferroelectric and magnetic properties, consequently leading to the enhancement of multiferroic properties. The investigation shows that the lead ferrite phase (220) was present in all samples, but its abundance reduced with increasing synthesis temperature due to lead desorption. Dielectric measurements revealed that PFO films with highest Cr concentration had the highest polarization (Pr) of 72.2 μC cm−2. The study also found that the magnetization of PFO films was up to 9.5·10−7 μAm2 at an ambient temperature of 5 K, and the magnetic ordering temperature was 363 K, corresponding to the magnetic ordering temperature of chromium oxides. The morphology of Cr doped PFO films changed with increasing chromium content, resulting in a reduction in grain size and an increase in the film density.

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Effects of Sm and Cr co-doping on structural, magnetic, optical and photocatalytic properties of BiFeO3 nanoparticles

Cited by 17 publications

References 64 publications

Effect of Pr and Mn co-substitution on Structural and Optical Properties of Bismuth Ferrite

Effect of Pr and Mn co-substitution on Structural and Optical Properties of Bismuth Ferrite

Improved Optical, Multiferroics, and Photocatalytic Properties of Bi_1−xSm_xFe_1−ySn_yO₃ Nanoparticles Synthesized by Sol–Gel Method

Synthesis and Characterization of Cr-Doped Pb₂Fe₂O₅ Thin Films by Reactive Magnetron Sputtering

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Effects of Sm and Cr co-doping on structural, magnetic, optical and photocatalytic properties of BiFeO3 nanoparticles

Cited by 17 publications

References 64 publications

Effect of Pr and Mn co-substitution on Structural and Optical Properties of Bismuth Ferrite

Effect of Pr and Mn co-substitution on Structural and Optical Properties of Bismuth Ferrite

Improved Optical, Multiferroics, and Photocatalytic Properties of Bi1−xSmxFe1−ySnyO3 Nanoparticles Synthesized by Sol–Gel Method

Synthesis and Characterization of Cr-Doped Pb2Fe2O5 Thin Films by Reactive Magnetron Sputtering

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Product

Resources

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Improved Optical, Multiferroics, and Photocatalytic Properties of Bi_1−xSm_xFe_1−ySn_yO₃ Nanoparticles Synthesized by Sol–Gel Method

Synthesis and Characterization of Cr-Doped Pb₂Fe₂O₅ Thin Films by Reactive Magnetron Sputtering